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    <meta charset="UTF-8">
    <title>这次是伪元素</title>
    <style type="text/css">
        p:first-letter{
            color: chartreuse;
            font-size: 50px;
        }
        h1:first-letter{
            color: #ff230d;
        }

        p:first-line{
            color: aqua;
        }

        a:before{
            content: url("images/windows.png");
        }

        a:after{
            content: url("images/windows.png");
        }
    </style>
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<h1>试试其他的标签</h1>
<p> 谷歌的小弟</p>
<p> 谷歌的二弟</p>
<p> 谷歌的san弟谷歌的san弟谷歌的san弟谷歌的san弟谷歌的san弟<br>谷歌的san弟谷歌的san弟</p>

<a href="http://www.baidu.com" target="_blank">百度网址</a>
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